Spin-aligned neutron-proton pairs in $N=Z$ nuclei
Phys.Rev.C83:064314,2011 A study is carried out of the role of the aligned neutron-proton pair with angular momentum J=9 and isospin T=0 in the low-energy spectroscopy of the $N=Z$ nuclei $^{96}$Cd, $^{94}$Ag, and $^{92}$Pd. Shell-model wave functions resulting from realistic interactions are analyz...
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Zusammenfassung: | Phys.Rev.C83:064314,2011 A study is carried out of the role of the aligned neutron-proton pair with
angular momentum J=9 and isospin T=0 in the low-energy spectroscopy of the
$N=Z$ nuclei $^{96}$Cd, $^{94}$Ag, and $^{92}$Pd. Shell-model wave functions
resulting from realistic interactions are analyzed in terms of a variety of
two-nucleon pairs corresponding to different choices of their coupled angular
momentum $J$ and isospin $T$. The analysis is performed exactly for four holes
($^{96}$Cd) and carried further for six and eight holes ($^{94}$Ag and
$^{92}$Pd) by means of a mapping to an appropriate version of the interacting
boson model. The study allows the identification of the strengths and
deficiencies of the aligned-pair approximation. |
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DOI: | 10.48550/arxiv.1103.3754 |